211122222100002 has 24 divisors (see below), whose sum is σ = 473204980570140. Its totient is φ = 67947381825120.

The previous prime is 211122222099977. The next prime is 211122222100007. The reversal of 211122222100002 is 200001222221112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 191609850667041 + 19512371432961 = 13842321^2 + 4417281^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (211122222100007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202224350149 + ... + 202224351192.

Almost surely, 2^{211122222100002} is an apocalyptic number.

211122222100002 is an abundant number, since it is smaller than the sum of its proper divisors (262082758470138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211122222100002 is a wasteful number, since it uses less digits than its factorization.

211122222100002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404448701378 (or 404448701375 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 211122222100002 its reverse (200001222221112), we get a palindrome (411123444321114).

The spelling of 211122222100002 in words is "two hundred eleven trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred thousand, two".